return 0;
}
运行结果：
请输入一个整数和一个字符：
3 F
Node constructor is running...
Linklist constructor is running...
Node constructor is running...
Node constructor is running...
After Insert
3 F
2 B
1 C
Node constructor is running...
An independent node created
Use friend function to show node
4 G
Node destructor is running...
Linklist destructor is running...
